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impleemnt static priorities

This commit is contained in:
Marc Alexander Lehmann 2007-11-02 20:05:05 +00:00
parent a650025791
commit 3f0621eb92
2 changed files with 35 additions and 19 deletions
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40
ev.c
View File

@ -102,6 +102,9 @@
#define expect_false(expr) expect ((expr) != 0, 0)
#define expect_true(expr) expect ((expr) != 0, 1)
#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
#define ABSPRI(w) ((w)->priority - EV_MINPRI)
typedef struct ev_watcher *W;
typedef struct ev_watcher_list *WL;
typedef struct ev_watcher_time *WT;
@ -195,22 +198,22 @@ typedef struct
int events;
} ANPENDING;
static ANPENDING *pendings;
static int pendingmax, pendingcnt;
static ANPENDING *pendings [NUMPRI];
static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
static void
event (W w, int events)
{
if (w->pending)
{
pendings [w->pending - 1].events |= events;
pendings [ABSPRI (w)][w->pending - 1].events |= events;
return;
}
w->pending = ++pendingcnt;
array_needsize (pendings, pendingmax, pendingcnt, );
pendings [pendingcnt - 1].w = w;
pendings [pendingcnt - 1].events = events;
w->pending = ++pendingcnt [ABSPRI (w)];
array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
pendings [ABSPRI (w)][w->pending - 1].w = w;
pendings [ABSPRI (w)][w->pending - 1].events = events;
}
static void
@ -595,16 +598,19 @@ ev_fork_child (void)
static void
call_pending (void)
{
while (pendingcnt)
{
ANPENDING *p = pendings + --pendingcnt;
int pri;
if (p->w)
{
p->w->pending = 0;
p->w->cb (p->w, p->events);
}
}
for (pri = NUMPRI; pri--; )
while (pendingcnt [pri])
{
ANPENDING *p = pendings [pri] + --pendingcnt [pri];
if (p->w)
{
p->w->pending = 0;
p->w->cb (p->w, p->events);
}
}
}
static void
@ -846,7 +852,7 @@ ev_clear_pending (W w)
{
if (w->pending)
{
pendings [w->pending - 1].w = 0;
pendings [ABSPRI (w)][w->pending - 1].w = 0;
w->pending = 0;
}
}

14
ev.h
View File

@ -36,6 +36,14 @@ extern "C" {
typedef double ev_tstamp;
/* these priorities are inclusive, higher priorities will be called earlier */
#ifndef EV_MINPRI
# define EV_MINPRI -2
#endif
#ifndef EV_MAXPRI
# define EV_MAXPRI +2
#endif
/* eventmask, revents, events... */
#define EV_UNDEF -1 /* guaranteed to be invalid */
#define EV_NONE 0x00
@ -72,6 +80,7 @@ typedef double ev_tstamp;
#define EV_WATCHER(type) \
int active; /* private */ \
int pending; /* private */ \
int priority; /* ro */ \
EV_COMMON; /* rw */ \
void (*cb)(struct type *, int revents); /* rw */ /* gets invoked with an eventmask */
@ -200,7 +209,7 @@ void ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, voi
/* these may evaluate ev multiple times, and the other arguments at most once */
/* either use ev_watcher_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */
#define ev_watcher_init(ev,cb_) do { (ev)->active = 0; (ev)->pending = 0; (ev)->cb = (cb_); } while (0)
#define ev_watcher_init(ev,cb_) do { (ev)->active = (ev)->pending = (ev)->priority = 0; (ev)->cb = (cb_); } while (0)
#define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0)
#define ev_timer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0)
@ -220,7 +229,8 @@ void ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, voi
#define ev_check_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_check_set ((ev)); } while (0)
#define ev_child_init(ev,cb,pid) do { ev_watcher_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0)
#define ev_is_active(ev) (0 + (ev)->active) /* true when the watcher has been started */
#define ev_is_active(ev) (0 + (ev)->active) /* true when the watcher has been started */
#define ev_set_priority(ev,pri) (ev)->priority = pri
/* stopping (enabling, adding) a watcher does nothing if it is already running */
/* stopping (disabling, deleting) a watcher does nothing unless its already running */